Here's what rhymes with inimitable.

Consider these alternatives

mellifluous / thus idiosyncratic / democratic mannerisms / conditions irreverence / reference incomparable / comparable idiosyncrasies / these laconic / chronic singsong / long sartorial / territorial flamboyance / annoyance individuality / personality eclecticism / position panache / was improvisatory / story expressionistic / characteristic lyricism / given sardonic / chronic impressionistic / characteristic imperious / serious affectation / operation